Padlock



Jul 25, 1933. E, B STONE 1,920,116

PADLOCK Filed Aug. 6, 1931 Patented July 25, 1933s ELMER? 3.; stroun, or ix nw' Bm'rAIN,- oonnncr cu'mfnssicnonare Mummers HARD ARE conronnrro'mor BRITAIN, couuncrrre'ur, A conronnzrrou or CONNECTICUT. x 1

rAnLocK f A pplication filed August 6, 1531; f sjerial No."555",5:f. Y

My invention relates tothe class of locks embodying a shackle comprising twoclegs one of which is movably secured within the lock case and the other of which engages a bolt in the opposite edge of the case,- and in connection with which the lock is used;

One form of a lock embodying my inven-' tion and in the construction and use of which the objects herein set out, as well as others, may be attainedis illustrated in the accompanying drawing, in whiche- Figure 1 is a front View of a padlock em- ,r bodyin'gmy invention. a

1 Figure 2 is an edge view of the same.

Figure 3 is a rear View with parts broken away to show construction, Figure 4 is an edge View on enlarged scale with parts broken away to show construction. I 1

Figure 5 is a detail view illustrating the form of the shackle at the point of engagement with the locking bolt and illustrating the strengthening feature. 7 I In the accompanying drawing the numeral' 6 indicates the case of my improved padlock that'may be composed of any suitable material and of any desired form'pe culiar'to locks'of this type. A shackle 7 of the usual form has'one leg movably secured within the case in a manner common tolocks of this typeythe other free leg 8 being removably' engaged within an opening 9 within the case. A locking bolt 10 pivotally mounted within" the case has a recess forming a lip 11 that engages'a shoulder 12 on the end of the shackle, as shown'in Figure 3 of thedrawing, this engagement being for the purpose of locking the shackle in its closed position.

. form the shackle-from metal round in cross of the lip 11 and shoulder 12 for the reason that the'latter' has a minimum amount of surface engaging with the lip, owing to this round form. It is undesirable to increase the size of the lock inorder to provide strength, but I haveefl'ected this result by making the shackle of substantially rectangular shape in cross section, and as shown 111 F gure 5, so that the-shoulder 12 15' of a width substantially the same as that of the lip 11, and this afiords engaging" surfaces between the lip 'and the shoulder suf 'ficient to provide extreme strength.

Locks of this type are commonly used in.

suspended positions upon moving'objects, as automobiles and thelike, and the move-. ment of such objectscauses the locks to be repeatedly swung into. contact with finished surfaces, thereby marring such surfaces. In order to lessen this defect I have so constructed the rivets uniting the halves 13-1 1 of thelock case that there will be no projections on the back of the case which is the part usually facing the finished surfaces just hereinabove referred to, it being noted that I have embodied my invention, in a padlock'of the permutation type and that includes in its structure a dial 15 that is constructed in any ordinary manner to release and secure the locking mechanism within the lock, which mechanism will also be of any ordinary construction to releaseand secure thelocking bolt 10. In order that the dial 15 may be operated the lock is supported so that the back faces said pol ished surfaces.

V In developing this idea the rear half 14 of the lock has recesses 16 formed therein in whichthe ends of the rivets are located,

said ends being riveted over and headed as at 17 *withinusaid' recesses, and as clearly shown in Figure 4 of the drawing, so that said heads will not project beyond the plane of the back surfaces of the lock case. a In order to further guard against the marring of a finished surface by contact of the lock case I provide a cushion in the form of a button 18 that'is secured to the backface of the look as by-means of a rivet 19 the head of which is located in a recess in the button, said rivet being secured to the lock case as by heading in the usual manner.

This button may be composed of any comparatively soft, non-marr'ing material as rubber or the like. 7

lVhile Ihave shown and described herein i a single button attached toh therear face of the lock case,-I contemplatethat "any number of buttons positioned as may be desired to accomplish the non-mai'i'ing"featurefor a non-marring feature of the lock.

I claim:

A padlock comprising a case having a shackle projecting from one end thereof and a button of non-marring material projecting voutwardly of a side of the case. with the button adapted tof-l'space the case from an article with which the shackle is engaged and said button including a cushion element carrie'dby-the case at a'point below the transverse: median line of'the case 13I0V1d1ng a two-point shackle and buttonengagement withthe article.

ELMER B. STONE.

ago 

